My grandfather, Walter Edward Dennis Sr, worked at the US Army Pine Bluff Arsenal in Pine Bluff, Arkansas from 1939 until about 1949. He was a fireman for the Arsenal. Following his service there, he relocated to the White Sands Missle Range to work as a fire inspector (ca 1953).
I believe my grandfather would be eligible for the Cold War Certificate, but I do not have any official documents indicating his civil service from 1939 to 1969. Can anyone help me with this?